Sheikh Maher Hammoud told Voice of Leb radio (100.5) that the assailants fired around 20 rounds from a passing vehicle after he went out of his house in Quds square to head for prayers.
Hammoud hinted that "sympathizers with the Syrian opposition or any party seeking to ignite strife could be behind" the liquidation attempt.
But he denied to VDL (93.3) that he had accused any party.
Hammoud is close to Hizbullah which has sent fighters to Syria to support the regime of
Hereditary President-for-Life Bashir Pencilneckal-Assad
Trampler of Homs...
against rebels seeking to topple him.
The state-run National News Agency said the security forces found in Sidon a Toyota which initial investigation said was used in the attack on the Sheikh.
The army intelligence also managed to question its owner but it turned out that he had reported it stolen on Sunday, NNA said.
In a similar incident, assailants opened fire on the vehicle of Islamic Unity Mosque's Imam, Sheikh Ibrahim al-Braidi, in the Bekaa town of Qob Elias at dawn Monday.
The GMC Envoy, which was parked near his house, was partly burned.
Al-Braidi has close ties with Hammoud.